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Invidia Downpipe Catted Divorced Wastegate w/ 2 Bungs

MODEL # INV HS08SW1DOC

$531.31


  • Q: Fitment  scwwrx19 days ago

    Will this fit my nameless performance catback exhaust?
  • Q: Tomei Fitment  nikolasstathis5170026 days ago

    If I purchase this with the Tomei catback, will I need to order anything in addition to be able to install? ie. Adapter/gaskets?
  • Q: Fitment   lippert13.ds148783 months ago

    I have a 2014 wrx with N1 race cat back. This down pipe will bolt up directly to the factory turbo? Without any problems?
    • 0 of 0 people found the following answer helpful

      A:  This is a direct bolt on for the factory turbo on your WRX, as well as any stock location aftermarket setups that retain the OEM exhaust housing outlet flange.

      Marcus E. @ RallySport Direct 3 months ago  
        
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  • Q: Fitment   Nathan4 months ago

    Will this bolt up to the invidia exhaust you have for sale part number HS08SW5GRT.
  • Q: Stock Exhaust  Drew4 months ago

    Does this downpipe hook up directly to a 2011 STI stock cat-back?
  • Q: HP  Xavier4 months ago

    Around how much HP/WHP will this add? Will be getting a protune.
    • 0 of 1 people found the following answer helpful

      A:  As with any part, we will not have a guaranteed hp/whp gain number, as it all depends on supporting mods, tuner, and how healthy the car is.

      Devan M. @ RallySport Direct 4 months ago  
        
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  • Q: Fitment  Dominus6 months ago

    Hi RSD, I have a 2018 Sti. Will this Downpipe fit the Fujitsubo Authorize RM catback since the Fujitsubo’s piping diameter is 2.75” and this downpipe is 3”? Are there adaptors or anything needed to make it fit? Thank you
    • 0 of 0 people found the following answer helpful

      A:  We cannot confirm fitment with that catback, as far as the adaptor goes we do not have anything for a 2.75" exhaust.

      Devan M. @ RallySport Direct 6 months ago  
        
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  • Q: Fitment  Eddie F.9 months ago

    Will this downpipe fit with a MagnaFlow Competition Series Cat-Back System? With the rest of the engine being stock on a 2018 STI limited
    • 0 of 0 people found the following answer helpful

      A:  This downpipe is 3 inches in diameter, it will fit any 3" catback system without an adapter, you will simply need a 3" 2 bolt gasket.

      Christian B. @ RallySport Direct 7 months ago  
        
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  • Q: Invidia downpipe  Bonnie10 months ago

    Does this fit the JDM sti 2010 sedan?
  • Q: Emissions  Scoobiesquad10 months ago

    Will having this downpipe prevent me from passing smog in california?
  • Q: Compatibility  Scoobiesquad10 months ago

    I have the invidia gemini r400 exhaust for my 2013 sti and i just ordered a cobb access port v3 and cobb sf short ram intake. Was wondering if this downpipe was optimal for my build and if there are additional parts like gaskets that i need for instalment? Thank you
    • 0 of 0 people found the following answer helpful

      A:  This would be an option you would have. Keep in mind Cobb won't have an OTS map for this downpipe.

      Luis L. @ RallySport Direct 8 months ago  
        
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  • Q: Which tune on accessport  TopGun9110 months ago

    Adding this to my n1 dual single tip catback and adding a cobb cold air filter. Which tune should I use on the access port? Thanks
  • Q: Part number   Paradise_1711 months ago

    I need the part numbers for the turbo to downpipe gasket and from the end of the downpipe to exhaust gasket for replacement i have this downpipe and indivia n1 dual burnt tips
    • 0 of 0 people found the following answer helpful

      A:  You will need part numbers GRM 022001 and GRM 028001 to replace the ones that were included in this kit.

      Jared A. @ RallySport Direct 11 months ago  
        
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  • Q: Extra bung plug for wideband sensor   TonyKeoWRX141 year ago

    What is the socket size to remove the bolt so I can install a wideband sensor for an AEM air/fuel gauge.
    • 0 of 0 people found the following answer helpful

      A:  It is either a 14 or 17. Almost positive it is a 14 but it should be among a set of metric wrenches.

      Tyler A. @ RallySport Direct 1 year ago  
        
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  • Q: installation  stiflow2 years ago

    just wondering if there were any installation videos of this
    • 0 of 0 people found the following answer helpful

      A:  I would refer to http://forums.nasioc.com/forums/showthread.php?t=2278415 to help with install.

      Jared A. @ RallySport Direct 2 years ago  
        
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  • Q: Invidia Part#: INV HS08SW1DOC  Subie2 years ago

    Have they confirmed the fitment for the 2016 Subaru WRX STI for this item, read many mixed reviews thanks.
  • Q: 2015 STI  Stephandoan3 years ago

    I have everything stock except intake and access port, do I need any adapters or gaskets for this down pipe? Thanks!
    • 0 of 0 people found the following answer helpful

      A:  You would need a 3" downpipe to stock catback adapter as well as a replacement donut gasket is recommended. This downpipe does not include the turbo to downpipe gasket so that is recommended. Another thing to consider would be the turbo heat shield, but the stock unit can be trimmed to fit around this bellmouth.

      Brady R @ RallySport Direct 3 years ago  
        
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  • Q: Gaskets!  jabad9783 years ago

    With purchasing this downpipe, I'm aware of needing to purchase a brand new gasket for turbo/downpipe but I'm wondering if i also have to purchase a new gasket from downpipe to an 3" aftermarket catback exhaust?? & would it be a donut gasket or regular exhaust gasket??
    • 0 of 0 people found the following answer helpful

      A:  It will depend on the size of the midpipe flange on your catback exhaust. If it is a 3" flange, you can use the included 3" 2 bolt gasket. If your exhaust is stock or uses a 2.5" flange, then I recommend getting a 3" downpipe to stock catback adapter and a new donut gasket. This adapter helps prevent leaks and allows you to use the OEM donut gasket.

      Josh P. @ RallySport Direct 3 years ago  
        
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  • Q: utah emmisions complient  chrisluke3 years ago

    will this downpipe pass utah emmisions test's and inspections?
    • 0 of 0 people found the following answer helpful

      A:  Because this downpipe replaces OEM Emissions Equipment, we must state that it is for off road use only. Please contact your local DOT or EPA for information regarding legality.

      Josh P. @ RallySport Direct 3 years ago  
        
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  • Q: California   M818209 3 years ago

    Is this downpipe California state legal?
  • Q: compatibility  mikiem3 years ago

    Hello, so I purchased this downpipe as well as an aem cold air intake. A professional tuner told me that this downpipe along with the aem cold air intake would cause boost creep. Is this true? He told me that I would have to buy an external wastegate to mitigate the problem? Is what he is saying true? How would I be able to find out whether I have boost creep or not. Thanks.
    • 0 of 0 people found the following answer helpful

      A:  Boost creep is only an issue on catless downpipes and should not be a problem with a catted downpipe. The internal wastegate does help control boost levels but it should not be required for your setup.

      Nick S. @ RallySport Direct 3 years ago  
        
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  • Q: compatibility  mikiem3 years ago

    Hello, so I purchased this downpipe as well as an aem cold air intake. A professional tuner told me that this downpipe along with the aem cold air intake would cause boost creep. Is this true? He told me that I would have to buy an external wastegate to mitigate the problem? Is what he is saying true? How would I be able to find out whether I have boost creep or not. Thanks.
    • 0 of 0 people found the following answer helpful

      A:  Boost creep is only an issue on catless downpipes and should not be a problem with a catted downpipe. The internal wastegate does help control boost levels but it should not be required for your setup.

      Nick S. @ RallySport Direct 3 years ago  
        
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  • Q: Fitting and other necessary parts  tabz993 years ago

    Hi guys! I have an N1 exhaust installed on my 2015 STi already, will I have any issues if I have this downpipe? What else do I need to order (parts) just so as not to have fitment issues during installation process? THANKS!
    • 0 of 0 people found the following answer helpful

      A:  This downpipe will bolt up directly to the N1 exhaust, and nothing else is needed for connecting this to your Invidia catback. It is recommended to purchase a new turbo to downpipe gasket and change or trim your stock turbo heatshield because the stock shield does not fit with this downpipe.

      Zach G. @ RallySport Direct 3 years ago  
        
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  • Q: midpipe?  alexe4293 years ago

    Does this downpipe paired with a q300 catback eliminate the stock midpipe? If not, where can I find a midpipe that will fit my 08 legacy gt?
    • 0 of 0 people found the following answer helpful

      A:  If you have a full Q300 system you have already eliminated your OEM midpipe. This downpipe would bolt directly the midpipe of the Q300. Just make sure you replace the turbo to downpipe gasket.

      Connor M. @ RallySport Direct 3 years ago  
        
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  • Q: Bolts  Natelmeier966773 years ago

    Can the bolts provided be used to both the DP to the Turbo? One of my bolts broke off.
  • Q: Figment to stock mid pipe  All2common3 years ago

    This will be my only mod. Will it fit my OEM mid pipe? 09 WRX
    • 0 of 0 people found the following answer helpful

      A:  This downpipe will bolt to the factory midpipe just fine. However make sure you tune your ECU after installation.

      Connor M. @ RallySport Direct 3 years ago  
        
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  • Q: 2nd bung  hockeymagik10580523 years ago

    Does this come with a plug for the second bung or will I need to purchase one?
    • 0 of 0 people found the following answer helpful

      A:  This downpipe does come plugged, if you do not want to utilize the 2nd O2 port you don't have to right away.

      Connor M. @ RallySport Direct 3 years ago  
        
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  • Q: Difference in downpipes  raulb50061074 years ago

    What is the difference from this one and INV HS08SW1DPC
  • Q: Invidia Catted DP into SPT catback 09 wrx.  David Guajardo4 years ago

    I was wondering what else I will need to fit this downpipe with my spt catback exhaust, I understand that a new downpipe is recommended but what about the connection with this downpipe in to my spt exhaust do i need an adapter or something? Thank you!
    • 0 of 0 people found the following answer helpful

      A:  If your SPT exhaust uses a donut gasket like the OEM, you will need a downpipe to OEM style Catback adapter. Grimmspeed makes one and the part number is GRM 077044.

        
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